package com.guli.mall.serviceBase.config;
/*
 * @Author 罗
 * @date 2020/9/11 - 8:34 下午
 */

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
@Slf4j
@ConditionalOnClass(PaginationInnerInterceptor.class)
public class MybatisPlusPaginationConfig {

    /**
     * mybatis-plus 分页插件
     * */
    /*@Bean
    public PaginationInnerInterceptor paginationInterceptor(){
        log.info("正在初始化 mybatis-plus 分页插件，最新版本的分页拦截器");
        return new PaginationInnerInterceptor();
    }*/

    @Bean
    @ConditionalOnMissingBean
    public PaginationInterceptor paginationInterceptor() {
        log.info("正在初始化 mybatis-plus 分页插件，这是官方实例代码，最新的怎么使用还没有更新");
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
        // paginationInterceptor.setOverflow(false);
        // 设置最大单页限制数量，默认 500 条，-1 不受限制
        // paginationInterceptor.setLimit(500);
        // 开启 count 的 join 优化,只针对部分 left join
        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }
}
